html text box code PHP method to convert text box content into HTML format

The example in this article describes how PHP converts the content of a text box into HTML format. Share it with everyone for your reference, the details are as follows:

Sometimes we will use the content entered in the multi-line text box to be displayed in html format, so that the original text format can be maintained, such as line feeds, carriage returns, etc. This can be achieved through the following function:

function shtm($design_str)
{
 $str=trim($design_str); // 取得字串同时去掉头尾空格和空回车
 //$str=str_replace("<br>","",$str); // 去掉<br>标签
 //$str="<p>".trim($str); // 在文本头加入</p><p>
 $str=str_replace("\r\n","<br>",$str); // 用p标签取代换行符
 //$str.="</p>\n"; // 文本尾加入
 $str=str_replace("<p></p>","",$str); // 去除空段落
 $str=str_replace("\n","",$str); // 去掉空行并连成一行
 $str=str_replace("","\n",$str); //整理html代码
 return $str;
}

PS: This site also provides the following conversion tools for everyone to choose from:

Online html/js/css code filtering tool:
http://tools. jb51.net/code/htmlfilter

Online UBB/HTML code conversion tool:
http://tools.jb51.net/transcoding/ubb2html

HTML to other language output tool:
http:/ /tools.jb51.net/code/HtmlCodeCov

Readers interested in more PHP-related content can check out the special topics of this site: "Summary of PHP Coding and Transcoding Operation Skills", "Introduction Tutorial on PHP Object-Oriented Programming", "Summary of PHP Mathematical Operation Skills", "Comprehensive Collection of PHP Array Operation Skills", "Summary of PHP String Usage", "PHP Data Structure and Algorithm Tutorial", "Summary of PHP Programming Algorithms", "php Regular Summary of Expression Usage", and "Summary of Common PHP Database Operation Skills"

I hope this article will be helpful to everyone in PHP programming.

The above introduces the html text box code PHP method of converting the text box content into HTML format, including the html text box code. I hope it will be helpful to friends who are interested in PHP tutorials.